Ive got a cad lamb, born first week in April, that's had a permanently snotty nose and just isn't doing well. She's had 2 courses of Betamox but not made any difference. I bought her back in from the field today as she looked pretty rough. Eating and drinking ok but I've got a feeling that I'm going to find her with her legs in the air one day. Any suggestions as to what it could be and what I could give her? Thanks